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HD 104028


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CCD astrometry and components instrumental magnitude difference of 432 Hipparcos wide visual double stars
Context: We measured the angular separations, position angles, ΔV, Δ y and Δ I of wide visual double stars during the period2003-2005. At least one component of the double stars in our sample hasan entry in the Hipparcos catalogue. Aims: Our measurements are acontribution to the study of the nature of these double stars. Methods: The northern double stars of the project were observed with the1.2 m telescope of the Kryonerion observatory and the southern with the1.0 m SAAO. We performed multiple-exposure CCD imaging of our targetsand used the standard procedure of data reduction and astrometric CCDcalibrations. Results: We present measurements of 213 northern and 219southern wide binaries.Based on observations made at Kryonerion Observatory of the NationalObservatory of Athens, Greece, and the South African AstronomicalObservatory. Full Table 1 and Tables 2, 3 are only available inelectronic form at the CDS via anonymous ftp to cdsarc.u-strasbg.fr(130.79.128.5) or viahttp://cdsweb.u-strasbg.fr/cgi-bin/qcat?J/A+A/472/1055

A second list of wide visual binaries
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A second list of wide visual binaries
Not Available

Catalogue of Metal-Deficient F-Stars to M-Stars - Part One - Stars Classified Spectroscopically - Supplement One
Not Available

Radial velocities of faint stars from objective prism plates
A simple method by which the approximate radial velocity of a star maybe obtained from objective prism plates is described in detail. Themethod has been used to derive the velocities of 41 faint stars, most ofwhich have metal-weak spectra and are shown to be high-velocity objects.It is shown that this method may be generalized so that the radialvelocities for all measurable stars on an objective prism plate can beobtained.

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Gözlemler ve gökölçümü verileri

Takýmyýldýz:Karga
Sað Açýklýk:11h58m45.37s
Yükselim:-17°45'32.3"
Görünürdeki Parlaklýk:8.713
Uzaklýk:99.9 parsek
özdevim Sað Açýklýk:-114
özdevim Yükselim:15.2
B-T magnitude:9.313
V-T magnitude:8.763

Kataloglar ve belirtme:
Özgün isimleri   (Edit)
HD 1989HD 104028
TYCHO-2 2000TYC 6097-997-1
USNO-A2.0USNO-A2 0675-11820298
HIPHIP 58423

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